<?xml version="1.0" encoding="utf-8"?>

<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <scale  android:interpolator="@android:anim/accelerate_decelerate_interpolator"
          android:fromXScale="0.0"
          android:toXScale="1.0"
          android:fromYScale="0.0"
          android:toYScale="1.0"
          android:pivotX="50%"
          android:pivotY="50%"
          android:fillAfter="false"
          android:duration="200" />
</set>